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The Multicast/Broadcast Service (MBS) feature of mobile WiMAX network is a promising technology for providing wireless multimedia, because it allows the delivery of multimedia content to large-scale user communities in a cost-efficient manner. In this paper, the authors consider WiMAX networks that transmit multiple video streams encoded in scalable manner to mobile receivers using the MBS feature. They focus on two research problems in such networks: maximizing the video quality and minimizing energy consumption for mobile receivers. They formulate and solve the substream selection problem to maximize the video quality, which arises when multiple scalable video streams are broadcast to mobile receivers with limited resources.
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